David Pattison, the co-founder and worldwide chief executive of PHD, has resigned from the Omnicom-owned network after 17 years.
It is understood that his decision follows the roll-out of PHD as a global network. He is still in talks with Omnicom about moving to a different role at the holding company but is also thought to be considering other options.
Pattison’s departure leaves Jonathan Durden as the only remaining founding partner at PHD. Nick Horswell left in 2002.
Pattison was joint media director of WCRS with Durden before the launch of the agency in 1990.